Effect of Production Components of Lentil (Lens culinaris Medik.) under Different Resource Constraints Practices

Background: Lentil occupy a unique place in India’s nutritional food security as it’s a major source of proteins for vegetarians, supply twice protein as compare to rice and wheat. India ranked second in terms of production followed by turkey producing 1.06 million tonnes (Annual Rreport DPB, 2016-17). Still lentil production far from its actual position because of farmer’s negligence in terms of fertilizer, irrigation, weeding, plant protection etc. Based on above mention criteria experiment was conducted to find out the production components for optimization of growth and yield of lentil under resource constraints. Methods: Experiment was conducted during winter season of 2016-17 and 2017-18 at the District Seed Farm, Kalyani, under Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal with a view to identify the most appropriate production components of lentil under resource constraints situation. Result: Fertilizer and weeding components were more noticeable effect on plant height and escaping these two components markedly reduce the plant height in all the growth stages. Skipping of individual component like irrigation only did not vary the dry matter production significantly but when it was combined with fertilizer and weeding components the dry matter production reduced significantly. Among the individual component escaping of fertilizer component greatly reduce the number pods plant-1 followed by weeding and irrigation components. Escaping of irrigation either as single component or in combined with weeding and plant protection did not reduce the 1000 seed weight significantly. Yield reduction was significantly noticed with escaping of production component either in single or in combination. 26-28% of yield reduction was found when component like fertilizer was escaped followed by 25-27% when weeding was escaped from full package. But no significant yield reduction was recorded under the FP-Irrigation and FP-Plant protection. The yield reduction was more pronounced (27-32%) when fertilizer along with weeding components was escaped. Weed growth and density increased with increased the crop age and number of weeds m-2 was found maximum at 45 DAS Highest BCR was found under the treatment FP-(weeding + PP).